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प्रश्न
In addition to speed, what else should we know to predict the position of a moving body ?
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उत्तर
Besides speed, we should know the direction to predict the position of a moving body.
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संबंधित प्रश्न
A train starting from Railway Station attains a speed of 21 m/s in one minute. Find its acceleration.
A motorcyclist starts from rest and reaches a speed of 6 m/s after travelling with uniform acceleration for 3 s. What is his acceleration ?
A car is moving along a straight road at a steady speed. It travels 150 m in 5 seconds:
How long does it take to travel 240 m ?
Write the formula to calculate the speed of a body moving along a circular path. Give the meaning of each symbol which occurs in it.
The graph given alongside shows how the speed of a car changes with time:
(i) What is the initial speed of the car ?
(ii) What is the maximum speed attained by the car ?
(iii) Which part of the graph shows zero acceleration ?
(iv) Which part of the graph shows varying retardation ?
(v) Find the distance travelled in first 8 hours.
Which of the quantity-velocity or acceleration-determines the direction of motion?
Give one example of following motion :
Variable velocity
The velocity-time graph of a moving body is given below in Figure
Total displacement.
What is the relation between distance and time when the body is moving with uniform velocity?
A body projected vertically up with a velocity of 10 m/s reaches a height of 20 m. If it is projected with a velocity of 20 m/s, then the maximum height reached by the body is:
